我的java代码无法搜索附近的蓝牙设备

import javax.bluetooth.*;
import java.util.Vector;

public class BluetoothDeviceSearch {
    public static void main(String[] args) {
        try {
            // 获取本地蓝牙适配器
            LocalDevice localDevice = LocalDevice.getLocalDevice();

            // 开始搜索蓝牙设备
            DiscoveryAgent agent = localDevice.getDiscoveryAgent();
            agent.startInquiry(DiscoveryAgent.GIAC, new DeviceDiscoveryListener());

            // 等待搜索完成
            Thread.sleep(5000);

            // 停止搜索
            agent.cancelInquiry(new DeviceDiscoveryListener());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 设备搜索监听器
    private static class DeviceDiscoveryListener implements DiscoveryListener {
        private Vector<RemoteDevice> devices = new Vector<>();

        @Override
        public void deviceDiscovered(RemoteDevice remoteDevice, DeviceClass deviceClass) {
            // 发现新设备
            devices.add(remoteDevice);
        }

        @Override
        public void inquiryCompleted(int i) {
            // 搜索完成
            System.out.println("搜索完成，共找到 " + devices.size() + " 个蓝牙设备：");
            for (RemoteDevice device : devices) {
                try {
                    System.out.println("设备名称：" + device.getFriendlyName(false));
                    System.out.println("设备地址：" + device.getBluetoothAddress());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }

        @Override
        public void serviceSearchCompleted(int i, int i1) {}

        @Override
        public void servicesDiscovered(int i, ServiceRecord[] serviceRecords) {}
    }
}